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SwellStack

Downhole safety valves can become corroded or damaged due to wireline activity. Standard chevron stacks commonly provided with insert safety valves are unable to effectively seal in this damage. This results in a leak path for hydrocarbons to migrate up the control line.

The only solution for a leaking safety valve was to perform a straddle or workover, and replace the damaged valve. This proved to be costly and time consuming.

In 2013 Tendeka released SwellStack, a swellable sealing solution which can be installed in place of an existing chevron stack and seal in damage within the bore of a safety valve.

This patented technology has been utilised with multiple operators globally, to regain well integrity via the safety valve. Comprising of a swellable seal element, and multiple chevron seals, the swellable element seals damage in the seal bore and activates the chevron seals, effectively providing a seal for up to 10,000psi in liquid and gas.

In 2019, Tendeka formed a partnership with Wellvene, further developing this technology, ensuring greater capabilities.

Tendeka will work with you to design and engineer a sealing solution tailored to your requirements. Whether accommodating non-standard internal diameters or unique fluid parameters, the end result is a system that perfectly fits the needs of your project.

For more information, please contact: swellstack@tendeka.com